Drawing-board



A. J. HAUG.

DRAWING BOARD. APFLICATION FILED DEc.2.1916.

1,354,743. Patented Oct. 5, 1920.

2 SHEETS-SHEET l.

A. HAUG.

DRAWING BOARD, APPLICATION FILED DEc.2. I9I6.

1,354, '743, Patented Oct. 5, 1920.

2 SHEETS-SHEET 2.

I I-.I' l 'il I Jzveivaf',

UNITED j STATES PATENT OFFICE.

ANTON J". HAUG', OF NASHUA, HAMPSHIRE.

DRAWING-BOARD.

Application filed December 2, 1916.

State of New Hampshire, have invented an Improvement in Drawing-Boards, of which the following is a speciiication. j

The invention relates to an improvement in drawing boards of -the self-supported type, wherein a variety of adjustments are provided for.. Y

The improved board is mounted with relation to a portable stand and self-balanced in such mounting, so that the `board may readily be bodily vadjusted to any height within the designed limits, and may be tilted with relation to the stand to any position Jfrom and including a horizontal position or a full vertical position.

The improved board comprises a stand having a plurality of fixed tubular uprights, certain of which carry guide-rods, on .the upper end of which the board proper is mounted for Va pivotal and sliding movement, .the remaining uprights of the stand serving as .housings 'for weights, joined through flexible connectors to the guiding rods of the board, to balance the board in its bodily vertical` movement` with respect to the stand. YThe mounting of the board for height movement is such ythat the board is constrained to move in .a predetermined plane. The pivotal mounting of the board with relation to the guide rods is such as to permit the board to be adjusted on said pivots to a full vertical position, a full horizontal position, or any intermediate position.

vln the drawings Figure 1 is a side elevation, partly in section, Villustrating the improved board, an adjusted position of the board being shown ,in dotted outline.

.F ig. 2 is a front elevation of the same.

Fig. 3 is .a broken elevation illustrating principally the board in a full upright or completely vertical section.

Fig. 4 is an enlarged detail illustrating the clamping connection Vfor securing the board at desired inclination with respect to the stand. Y

F ig. 5 is a section on line -of Fig. 3.

Specification of Letters Patent.

Patented oet. 5, 1920.

Serial No. 134,592.

The improved board, as illustrated, includes a stand 1, comprising ,a base 2, of appropriate spread, having feet or floorengaglng portions 3. Rising from the base are tubular uprights 4 and .5, arrano'ed in Apairs at each .end Aof the base, the ormer being of materially less diameter than the latter. The uprights 4, which, considered .from the front of the board, are arranged in advance oi' vthe uprights 5, serve .as guiding uprights for the vertical or height movement of the board, each of said upn rights being for this purpose provided with a guide rod 6, telescopically arranged therein, .to the upper end of which the board is pivoted in a manner to be later described. The uprights 5 serve merely as housings for the boardV counterbalancing means, there being provided for this purpose appropriate weights 7, slidably mounted within each of said uprights 5, which weights are connected by flexible lconnectors 8, to lugs 9 projecting laterally from the rods 6, preferably near the lower end of the latter, the uprights 4 being slotted longitudinally to permit ythe disposition kof the lugs beyond the uprights, for convenience in securing the connector thereto. The uprights 4 `and 5 are of similar height, and `each pair are both closed at the upper ends by `a single cap 10, on which is secured a pulley 11, mounted in ears 12 rising from the cap, the cap being appropriately formed with openings to permit the passage of the connector S therethrough, which connector leads over the pulley.

. The drawing :board proper, shown Vat 13, is designed to be of any .usual or desired type. rlhe board is mounted for appropriate sliding movement through strips 14 secured to the lower surfaces of .the board and in which strips and throughout the length thereof, are formed slots 15. Connecting bolts 16 have their heads of an .appropriate size to be slidably received in the slots 15, inthe strips, plates 17 being secured to the under side of the strips .alined with slots 15, but of a size to receive the Shanks of the bolts 16. The strips and plates in this particular formation provide a convenient way Of forming T-formed .slots .to receive the connecting bolts, and prevent other than a sliding movement of the latter with relation to the strips, so that it is to be understood that any pecific forms to securethis end may be use The bolts below the strips extend through brackets 18, there being one such` bracket for each strip. Each bracket is of right.- angle formation, as shown, the connecting bolts passing through the horizontal portion of the bracket andthe vertical portion thereof bearing against one side-wall of the strip to further guide the parts in the permitted adjustment. The terminals ofthe bolts are provided with thumb-nuts or equivalents 27 to secure the brackets and strips in fixed relation following desired sliding adjustment of the board. The

bracketincludes a connecting sleeve 19 arranged transversely and centrally of the horizontal Lportion thereof, and inline with the sleeve'tliere is formed one member 20, olf-a conventional type of clamping disk, the opposing and similar member 21 of which is'ca'rried upon a connector 22, removablyY fixed upon the upper end of the guide-rod 6.V yThe connector 22 andbracket 18 are connected for pivotal movement by a rod 23, extending through the sleeve 19, and through an appropriate bearing formation of the connector, a wing nut 24 on the rod end serving to secure the respective members of the clamping disk in relative positions 'against` independent movement, when desired. The members 20 and 21 of the clamping disk are here shown as having their proximate faces serrated or formed with teeth to secure an interlocking coperation when it is desired to fix the bracket and the connector in adjusted relation though other usual constructions are contemplated. The board, as an entirety, is

- thusA capable of vertical or height movement within the limits of the structure, and guided in. such movements through the rods 6, the weights 7 acting to counterbalance the weight of the board and carried parts, so that such board will remain at any desired height. Furthermore, by reason of the bracket mounting with respect to the connector 22, the board is readily adjustable to any inclination with respect to the stand, from the horizontal position to a full vertical position, and, of course, capable of being locked in adjusted position. That characteristic of the y structure which permits the board to attain a full vertical position is of importance, vas it is desirable, under some conditions of drafting, to have the board directly vertical, and a position approaching the vertical has been insuflicient to answer the ends desired. Hence it will be noted that the plates of the brackets 18 extend in both directions beyond the connecting sleeves 19, and that the connectingried by the board, the board is independently movable or slidable with respect to its pivotaLmountings, thereby permitting the board to be moved toward or from the stand in any plane in which the board might be positioned.

It is to be noted that by reason of the spaced-apart tubular uprights, and the guid-` ing rods supporting the board at the opposite edges, a very rigid board supporting and guiding means is provided which constrains the board for height adjustments in a predetermined plane and without permitting the board to swing sidewise or oscillateduring such adjustment. Y f

I claim:

1. A drawing board structure including 9o in combination a base, a drawing board, means tov angularly adjust said board with respect to said base, means to slidably adjust said board with respectrto said base, means to adjust said board for height movement in any angularly or slidably adjusted position and means to balance said board in such height movement.

2. A drawing board structure comprising a base, board supporting and guiding means movable with respect to said base for guiding the board in height adjustments, means for balancing the board in height adjustments, Vand connections intermediate said supporting and guiding means and the board to permit an independent sliding movement of the board with respect to said board supportingand guiding means in any height adjustment. Y 3..Avl drawing board structure comprising a base having spaced-apart tubular uprights, guiding and supporting means for the board movably arranged in certain of said uprights to guide and support the board in height adjustments, balancing means for the board arranged in other of said uprights, brackets slidably connected to the board, and pivotal connections between the brackets and guiding means capable of locking adjustment to secure the `board in pivotal adjusted relation.

4:. A drawing board structure comprising a base having spaced-apart tubular uprights, guiding and supporting means for the board movably arranged in certain of said uprights to guide and support the board in height adjustments, balancing means for the board arranged in other of said uprights, brackets slidably connected to the board and pivotally connected to the guiding means, the pivotal connection be- In testimony whereof7 I have signed my tween the bracket and guiding means being name to this specification, in the presence capable of locking adjustment to secure the of two subscribing witnesses.

board in pivotal adjusted relation, eonneo- ANTON J. HAUG. tions between the brackets and board prolVitnesses: viding for locking the board in desired slid- B. J. NoYEs,

ing adjustment thereof. H. B. DAVIS. 

